题目信息
If k ≠ 0 and k – 
, then x =
, then x =
A:–3 – k2
B:k2 – 3
C:3k2 – 3
D:k – 3 – 2k2
E:k – 3 + 2k2
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已选答案：
正确答案：
C:3k2 – 3
Algebra Simplifying algebraic expressions
Multiplying both sides of the equation by k gives k2 – (3 – 2k2) = x or x = 3k2 – 3.
The correct answer is C.
Multiplying both sides of the equation by k gives k2 – (3 – 2k2) = x or x = 3k2 – 3.
The correct answer is C.
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